Polydrusus (Polydrusus) viridimaculatus Pic, 1919

Yunakov, Nikolai, Korotyaev, Boris & Alziar, Gabriel, 2024, Miscellaneous notes on the systematics of and synonymy in Entiminae (Coleoptera, Curculionidae), Contributions to Entomology 74 (2), pp. 249-264 : 249-264

Polydrusus (Polydrusus) viridimaculatus Pic, 1919 stat. nov.

Fig. 10

Polydrusus picus var. viridimaculatus Pic, 1919: 2.

Polydrusus picus viridimaculatus Pic, 1919: Yunakov 2013: 374; Alonso-Zarazaga et al. 2017: 362; Alonso-Zarazaga et al. 2023: 376.

Polydrusus (Eustolus) scapularis Pesarini, 1975: 52 , syn. nov.

Type material.

TURKEY • Lectotype ♀, herein designated; “ Asie min. / Brousse / Pic 1899 [printed label]; viridimaculatus / Pic [handwritten]; Museum Paris [printed]; Lectotype Polydrusus picus var. viridimaculatus Pic / Yunakov des., 2012; MNHN • Paralectotype ♀, dissected; Brousse [handwritten]; Pol. picus var. (ex. Desbr.) [handwritten]; “ Paralectotype Polydrusus picus var. viridimaculatus Pic / Yunakov des., 2012 ”; MNHN (Fig. 10 A – D ) .

Other material examined.

TURKEY • 1 ♀; “ Turkey, Murat Dagi Mt., SE Gedis ” [39.0333°N, 29.4167°E]; 7 Jun. 2006; P. Białooki leg.; ZIN • 3 ♂, 3 ♀; “ Amasia ”; “ Samml. K. F. Hartmann / Ankauf 1941. I. ”; MTD. (Fig. 10 E, F ) .

Notes.

This taxon was briefly described as a variety of Polydrusus picus (Fabricius, 1792) from Turkey. It exhibits significant differences in external morphology, particularly in the structure of the male and female genitalia (Fig. 10 E – H ):

The median lobe apex is attenuate (evenly narrowed anteriorly in P. picus ).

The lateral ostial valves (lov) are less sclerotized, with unclear margins (sclerotized, with distinct margins in P. picus ).

The endophallic armature bears fields of enlarged and sparser spicules (sf 1), and smaller and denser spicules (sf 2) (armature consists of fields with only smaller and denser spicules in P. picus ).

The endophallic sclerite (es) is small and lacks an additional spiculate field (sf 3) (endophallic sclerite is larger with an additional spiculate field in P. picus ).

The apodeme of male sternite 9 has a small caput (Mst 9 - ca) (large caput in P. picus ).

The nodulus of the spermatheca (no) is not inflated and the cornu (cr) is attenuate (nodulus inflated and cornu rounded and shortened in P. picus ).

These differences strongly support the promotion of Polydrusus viridimaculatus to the species level.

Figures

Figure 10. Polydrusus: A, B. Polydrusus viridimaculatus stat. nov., lectotype (MNHN), body dorsal and lateral view; C. Polydrusus viridimaculatus stat. nov., lectotype, head dorsal view; E. Polydrusus viridimaculatus stat. nov., male genitalia; F. Polydrusus viridimaculatus stat. nov., spermatheca; G. Polydrusus picus, male genitalia; H. Polydrusus picus, spermatheca. Abbreviations: Male genitalia: es – endophallic sclerite; lov – lateral ostial valves; Mst 9 - ca – caput of sternite 9; oss – ostial sclerite; sf 1 – sf 3 – spiculate fields 1–3; Spermatheca: co – collum; cr – cornu; no – nodulus; ra – ramus.